V2 manifest path in Java

[wjones127]

Follow up for #2798

Added to Python and Rust, but not yet Java.

https://github.com/lancedb/lance/blob/42fed55d831d28e8d07e01e65453159ae3e58078/java/core/lance-jni/src/blocking_dataset.rs#L68

[suxiaogang223]

Hi — I’d like to pick up this, could you please assign this issue to me @wjones127 ?